When conducting the experiment, connect the ball gap device in parallel with the test sample. The ball gap device itself has a protective resistor of 1 ohm per volt in series. First, adjust the ball gap to 60% of the test voltage (the discharge distance of the ball gap can be checked from the ball gap discharge voltmeter below, Tables 1 and 2). At this time, the test sample should be connected simultaneously. Measure the readings of the test transformer and low-voltage side voltmeter when the ball gap is discharged (take the average of 3-4 times), and then measure the readings of the voltmeter at 70% and 80% of the test voltage in the same way. Use this three-point line value as a curve (mostly a straight line), and then extend this curve (mostly calculated proportionally) to a position 10-15% higher than the required test voltage, as a discharge protection against overvoltage that may occur during the withstand voltage test process.
Typical application environment of discharge ball gap pressure gauge (horizontal type)
The discharge ball gap pressure gauge (horizontal type) is mainly used in various professional scenarios that require high-voltage testing, overvoltage protection, and voltage calibration
The KDRS638E handheld infrared thermal imager is a high-performance infrared temperature measurement device designed for professional engineers and researchers. It integrates high-resolution thermal imaging, visible light fusion, intelligent analysis, and multi terminal interconnection, and is widely used in high demand application scenarios such as power inspection, industrial automation, building inspection, HVAC, and pipeline system maintenance.
Application field
Product development, house inspection, equipment maintenance, power inspection, electrical maintenance
The KDRS638E handheld infrared thermal imager is a high-performance infrared temperature measurement device designed for professional engineers and researchers. It integrates high-resolution thermal imaging, visible light fusion, intelligent analysis, and multi terminal interconnection, and is widely used in high demand application scenarios such as power inspection, industrial automation, building inspection, HVAC, and pipeline system maintenance
The KDRM200F entry-level handheld infrared thermal imager is designed for scenarios such as power inspection, equipment maintenance, building inspection, and HVAC system diagnosis. Equipped with a 256 × 192 high-resolution infrared core, 40mK thermal sensitivity, and manual focusing lens, it supports temperature measurement over a wide range of -20 ℃~550 ℃ with an accuracy of ± 2 ℃. Equipped with a 3.5-inch touch screen, 2 million visible light camera, laser pointer, and IP54 protection level, it is sturdy and durable, supporting WiFi/USB data transmission, cloud services, and professional analysis software. It can quickly locate thermal faults and generate reports, making it an efficient and reliable on-site inspection assistant for engineers.
In modern data centers, uninterruptible power supply (UPS) systems are critical components for ensuring data security and continuous operation. These systems rely on large battery packs to provide emergency power support in case of power outages. Regular maintenance, testing, and performance evaluation are crucial to ensure that these battery packs can operate reliably when needed. The KDZD886 series battery charge and discharge tester is an ideal tool designed for such requirements.
Product Overview – KDGK-II High & Low Voltage Switchgear Power-On Test Bench
The KDGK-II High and Low Voltage Switchgear Power-On Test Bench is specifically designed for manufacturers of high and low voltage switchgear to perform comprehensive power-on acceptance tests before product dispatch. It provides a versatile range of adjustable and fixed AC/DC power outputs, enabling efficient and reliable functional verification of switchgear units and significantly improving production line testing efficiency.
Key Features:
Technical Specifications:
Typical Application Environment:
Ideal for use in switchgear manufacturing workshops, assembly lines, and final inspection areas. The KDGK-II supports full functional testing of common switchgear types (e.g., GGD, GCS, MNS, KYN28) under simulated real-world power conditions. Its robust design, electrical safety features, and flexible power outputs make it a reliable solution for standardized, high-efficiency factory acceptance testing in industrial settings.
Application Environment of KDZL-807 Automatic Interface Tension Tester
1. Applicable industry scenarios
Power industry: used for detecting interfacial tension of liquid media such as transformer oil and insulation oil, evaluating the degree of oil aging and purity, and ensuring the safe operation of power equipment.
Petrochemical industry: detecting surface/interfacial tension of crude oil, lubricating oil, fuel oil, additives, etc., used for oil quality control and formula development.
Pharmaceutical and Bioengineering: Measuring the interfacial properties of drugs, solvents, emulsions, etc. for drug stability, solubility, and formulation process optimization.
Food industry: used for surface tension analysis of liquids such as dairy products, edible oils, beverages, etc., to assist in food composition and quality control.
Universities and research institutions: as the core equipment for teaching and research experiments in physical chemistry, materials science, colloid chemistry, and other fields.
2. Physical environment requirements
Temperature: 10 ° C to 30 ° C (recommended for use in a constant temperature environment of 25 ° C to ensure measurement accuracy)
Humidity: Relative humidity<85% RH (without condensation)
Power supply: AC 220V ± 20%, 50Hz ± 10%, requires stable power supply, it is recommended to use anti surge socket
Installation location: Indoor, well ventilated, no strong electromagnetic interference, no corrosive gases, and no severe vibrations on the experimental table
Space requirement: The device size is 200 × 300 × 330 mm, and there should be reserved space for operation and heat dissipation (recommended tabletop size ≥ 500 × 500 mm)
3. Operation and usage conditions
Operator: Must have basic knowledge of chemistry or instrument operation, and can get started with simple training
Sample requirements: The liquid sample should be clear, free of particle impurities, and avoid contaminating the platinum ring
Calibration and maintenance: Regularly use standard solution (such as pure water) for single point calibration to maintain sensor sensitivity
Data Management: Supports local storage (255 timestamp records) and optional RS232 interface connection to computers, suitable for scenarios requiring data traceability or laboratory information management
Application environment of KD2675 series AC/DC withstand voltage insulation analyzer
1. Typical application scenarios
The instrument integrates functions such as AC withstand voltage, DC withstand voltage, insulation resistance, and arc detection, and is mainly used in fields that require electrical safety performance testing. Typical scenarios include:
Electronic product manufacturing: voltage/insulation testing of production lines for household appliances, 3C equipment, etc. before leaving the factory;
Medical equipment research and development: safety testing in accordance with standards such as IEC60601 (such as medical instrument quality inspection);
Electrical component quality inspection: incoming inspection and safety certification of suppliers such as cables and circuit boards;
Third party testing institutions: laboratory testing processes for safety certifications such as 3C and CE.
2. Environmental condition requirements
Combining the "installation location" and "usage environment" in the product specifications, the following physical environmental constraints must be met:
Space: Indoor use, altitude ≤ 2000 meters (high-altitude air pressure changes may affect electrical performance stability);
Temperature: 0~40 ℃ (to ensure that the internal components of the equipment work normally within the temperature rise range);
Humidity: The relative humidity at 40 ℃ is 20-90% RH (to avoid insulation failure or electrostatic interference caused by humidity).
3. Adapt to scene characteristics
Automated testing requirements: Supports RS232, PLC/ANDLER interfaces, can be connected to automated production line systems, and achieve efficient batch testing;
High precision R&D/certification scenarios: waveform distortion<2% (resistive load), current measurement resolution up to 0.001mA (AC)/0.1 μ A (DC), meeting the precision testing needs of R&D laboratories and certification agencies;
Areas with high safety requirements: uS level leakage protection response, anti electric shock design, suitable for scenarios such as medical equipment and power systems that require strict testing safety and reliability.
4. Limiting Scenarios
Extreme environments (such as high temperature>40 ℃, high humidity>90% RH, high altitude>2000 meters) may affect testing accuracy or equipment lifespan;
Outdoor direct exposure scenarios (susceptible to dust and moisture interference without protective measures).
The KDGK-II high and low voltage switchgear power on test bench is suitable for the production environment of high and low voltage switchgear manufacturers and is used for power on testing before the switchgear leaves the factory. This device requires a three-phase four wire AC 380V power supply as input and is suitable for testing resistive and inductive loads. The equipment adopts a three-phase rectification module input without phase sequence restrictions. The triggering circuit system, thyristor, and thermal conductive substrate are insulated and isolated from each other, with a dielectric strength greater than 2500V, ensuring safe use. The external dimensions of the equipment are 700 × 600 × 1100mm, suitable for use in dry, non corrosive gas production environments.
The Automatic Tension Meter is designed for precise measurement of surface tension (liquid-gas interface) and interfacial tension (liquid-liquid interface) across a wide range of industrial and laboratory environments. It is ideally suited for use in:
The instrument operates reliably in controlled laboratory conditions with ambient temperatures between 10–30°C and humidity below 85% RH, ensuring stable and accurate measurements. Its compact size, integrated printer, and optional RS232 data output make it suitable for both benchtop testing and integration into data management systems.
KDHG-220P Variable Frequency Transformer Characteristics Comprehensive Tester
Efficient and accurate power equipment testing solution
Application Applications
Power system maintenance and overhaul
Provide comprehensive performance evaluation for current transformers (CT) and voltage transformers (PT) in substations, including parameter testing of volt ampere characteristics, transformation ratio, polarity, etc., to ensure the stable operation of the power system.
Suitable for regular inspection and maintenance of various protection, metering, TP CT, and electromagnetic unit PTs, improving the safety and reliability of the power grid.
New equipment acceptance and debugging
When constructing or upgrading power facilities, it is used to conduct detailed pre factory testing on newly installed CT and PT to ensure compliance with national and international standards (such as GB20840.1, IEC60044-1).
Provide accurate error curve analysis to help engineers determine whether the equipment meets design specifications and ensure the quality and performance of new equipment.
Research and Education
As a teaching and research tool in universities and research institutions, it is used for experimental courses and scientific research projects in electrical engineering majors to help students and researchers gain a deeper understanding of the working principles and testing methods of transformers.
Support secondary winding resistance measurement, AC load testing, and other functions to meet the detailed research needs of transformer characteristics in laboratory environments.
industrial applications
In industrial production environments, in order to ensure the safe operation of large electrical equipment, the status of transformers is regularly monitored to prevent potential failures and reduce the risk of power outages.
The lightweight design is easy to carry to the site for use, especially suitable for scenarios that require frequent mobile operations, such as equipment testing in remote locations such as wind farms and hydropower stations.
The Partial Discharge Detector is designed for use in a wide range of power system environments, including:
Manufacturing plants – for quality control of transformers, cables, and switchgear.
Power substations – for on-site commissioning and routine maintenance.
Transmission & distribution networks – for condition assessment of high-voltage equipment.
Industrial facilities – for predictive maintenance of critical electrical assets.
Laboratories – for R&D and type testing of insulation systems.
Operates reliably in temperatures from -10°C to +40°C and humidity ≤80% RH, making it suitable for both indoor and field applications.
